I recently came across this fantastic and simple chart that an experienced swimmer wrote about returning to swimming after a few year’s hiatus.

As swimmers we actually often forget or don’t realise how fit we are, or at least how well adjusted we are to the requirements of regular swimming.

This simple chart explains better than anything I have ever seen. Thanks to Mister Siren for this.

As one commenter in the original location said:

“to think there was a time when I couldn’t understand how swimming made people tired…”